Improvement in spring-hinges



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V. S. HERZOG, OF BAL'I'IlVI ORE, MARYLAND. Letters .Patent No. 88,567, dated April 6, 1869.

IMPROVEMENT 1N sPRING-HINGES.

The Schedule referred to in these Letters Patent and making part cf the same.

To all whom it may concern Be it known that I, V. S. HERZOG, of the city and county of Baltimore, and State of Maryland, have invented a new and useful Double-Acting Spring-Hinge; and I do hereby declare that the following is a full, clear, and Vexact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specication, in which Figure 1 is a sectional view, taken in the line v lu, iig. 2, showing the spindle surrounded by the actuatingspring.

Figure 2 is a sectional View, taken in the line a: fig. 1.

Figure 3 is a perspective view of one end of the cylindrical casing.

Figure 4 is a sectional View, taken in the line y y of Iig. l.

VThe nature of my invention consists in constructing a double-acting spring-hinge, with a single pintle, or spindle; also, the peculiar manner of attaching the actuating-spring; and also, the peculiar form of construction of the cylindrical casing enclosing the pint-le, or spindle and the actuating-spring.

To enable any one skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

In the drawings- A represents tlucylindrical casing, which is provided with a ilange, a, for securing it to the door by screws.

Theends oi the casing A have shoulders B B formed on them, by cutting away a portion equal to about onethird of the circumference, as shown in iig. 3.

C C are caps, provided with flanges c c', for securing them to the door-frame, or jamb.

In thesecaps, and cast or formed with them, are projections D D', each of which forms an arc equal to about two-thirds of a circle.

E is the pintle, or spindle, one end of which, e, is rigidly attached to the cap C; the other end, e', passing through a. hole in the cap G.

.gages with the shoulder B. The cap C is then placed in position, and the end c of the spindle secured by riveting, or by a nut and screw-thread, as may be desired, so as to hold the several parts in proper position, as shown in iig. 2, the lower end f of the spring E resting against the arc D and shoulder B, and the upper end f resting against the arc D and shoulder B.

The operation is as follows:

When the door is opened to the left, (as indicated by arrow l, fig. 2,) the shoulder B presses the end f toward the line o v, which tends to wind up, or tighten the spring, the shoulder B leaving the end f resting against the arc I), in the position shown in iig. 4.

When the door is opened to the right, (as indicated by arrow 2,) the shoulder B engages the end f, leaving` the end f resting against the arc D.

In either case, when the door is released, theposition of the ends f f', and the tendency of the spring F to unwind itself, serve to retain the parts in the position shown in iig. 2, and keep the door closed.

Having thus fully described my invention,

Vhat I claim therein as new, and desire to secure by Letters Patent, i2s

The combination and arrangement of the casing A and shoulders B B', the caps C C and arcs D D', with the pintle E and spring F, when constructed and operating as herein shown and described. y

Witnesses: V. S. HERZOG.

STEPHEN A. MORSE, HENRY MGCAFFRAY. 

